# State the relation between change in area and change in temperature.

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State the relation between change in area and change in temperature.

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$\frac{ΔA}{A_0}$ = $a_AΔT$

ΔA – Change in area (Final area – Initial area)

A0 – Original area

ΔT – Change in temperature (Final temperature – Initial temperature)

αA – Coefficient of superficial expansion.